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2026-05-12 21:8CVE-2026-44259GitHub_M
PUBLISHED5.2CWE-80

efw4.X: Stored XSS via previewServlet

efw4.X is an Enterprise Framework for Web. Prior to 4.08.010, the previewServlet serves files with their detected MIME type based on file extension, without any content sanitization or security headers. Files with .html, .htm, or .svg extensions are served as text/html or image/svg+xml respectively, causing any embedded JavaScript to execute in the victim's browser within the application's origin. This vulnerability is fixed in 4.08.010.

Problem type

Affected products

efwGrp

efw4.X

< 4.08.010 - AFFECTED

References

https://github.com/efwGrp/efw4.X/security/advisories/GHSA-hw67-p3gw-rrmj

https://github.com/efwGrp/efw4.X/security/advisories/GHSA-hw67-p3gw-rrmj

x_refsource_CONFIRM

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-44259
Click to expand
{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-44259",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2026-05-12T21:08:27.846Z",
    "dateReserved": "2026-05-05T16:33:55.844Z",
    "datePublished": "2026-05-12T21:08:27.846Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M",
        "dateUpdated": "2026-05-12T21:08:27.846Z"
      },
      "title": "efw4.X: Stored XSS via previewServlet",
      "descriptions": [
        {
          "lang": "en",
          "value": "efw4.X is an Enterprise Framework for Web. Prior to 4.08.010, the previewServlet serves files with their detected MIME type based on file extension, without any content sanitization or security headers. Files with .html, .htm, or .svg extensions are served as text/html or image/svg+xml respectively, causing any embedded JavaScript to execute in the victim's browser within the application's origin. This vulnerability is fixed in 4.08.010."
        }
      ],
      "affected": [
        {
          "vendor": "efwGrp",
          "product": "efw4.X",
          "versions": [
            {
              "version": "< 4.08.010",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)",
              "cweId": "CWE-80",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/efwGrp/efw4.X/security/advisories/GHSA-hw67-p3gw-rrmj",
          "name": "https://github.com/efwGrp/efw4.X/security/advisories/GHSA-hw67-p3gw-rrmj",
          "tags": [
            "x_refsource_CONFIRM"
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "REQUIRED",
            "scope": "UNCHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "availabilityImpact": "NONE",
            "baseScore": 4.6,
            "baseSeverity": "MEDIUM"
          }
        }
      ]
    }
  }
}